[gdal-dev] I cannot clean overviews from GeoTIFF

[Even Rouault]

Fix in https://github.com/OSGeo/gdal/pull/12351

You can workaround the issue by adding -oo IGNORE_COG_LAYOUT_BREAK=YES 
(actually not needed for cleaning as this doesn't break the layout, but 
definitely needed for adding to a COG)

Le 12/05/2025 à 12:01, Javier Jimenez Shaw via gdal-dev a écrit :
> Hi
>
> I am trying to clean the overviews from a GeoTIFF, but gdaladdo does 
> not allow me.
> Is that an expected behaviour? Maybe I am missing more options. (there 
> is no opposite of "-ro")
>
> $ gdaladdo --debug on -clean out/test.tif
> GDAL: GDALOpen(out/test.tif, this=0x133058e00) succeeds as GTiff.
> GTiff: ScanDirectories()
> GTiff: Opened 6978x5110 overview.
> GTiff: Opened 3489x2555 overview.
> GTiff: Opened 1744x1277 overview.
> GTiff: Opened 872x638 overview.
> GTiff: Opened 436x319 overview.
> GTiff: File open for read-only accessing, creating overviews externally.
> ERROR 6: test.tif: Cannot add external overviews when there are already internal overviews
> Cleaning overviews failed.
> GDAL: GDALClose(out/test.tif, this=0x133058e00)
>
> $ gdaladdo --version
> GDAL 3.11.0 "Eganville", released 2025/05/06
>
> I am running it on a Mac.
> Cheers,
> Javier.
>
>
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